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Question
A football match being played at Sao Paulo, Brazil started in India at 6 am IST. Explain what would be the local time at Sao Paulo?
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Solution
Statement: For any place lying to the west of another place, the local time decreases by 4 minutes for every 1° of longitude. Since São Paulo lies to the west of India, its local time is behind India’s local time.
Difference in longitude (as taken in the textbook) = 127°30′.
Difference in local time
= 127.5° × 4 minutes
= 510 minutes
= 510 ÷ 60
= 8 hours 30 minutes.
Therefore, if it is 6:00 a.m. IST in India, the local time at São Paulo will be:
6:00 a.m. − 8 hours 30 minutes = 9:30 p.m. (previous day).
The local time at São Paulo would be 9:30 p.m. on the previous day.
RELATED QUESTIONS
Give a geographical reason:
The local time is decided by the noon time.
Give geographical reason:
The local time at Greenwich is considered to be the international standard time.
What is local time?
The Sun is overhead on a line of longitude ______in a day.
The word meridian is derived from the Latin word ______.
Examine the following statements:
- When you move towards the East from any meridian the time increases.
- When you move towards the West from any meridian the line decreases.
- The earth rotates from West to East on its own axis.
Look at the options given below and choose the correct answer.
What is GMT?
